The present disclosure relates to a washing machine to which a pulsator structure capable of preventing damage to a pulsator is applied. The washing machine includes a cabinet in which an opening for putting laundry is formed on a front side, a tub provided inside the cabinet, a drum rotatably provided inside the tub, a pulsator rotatably installed on the drum, and a cap coupled to the pulsator to cover at least a portion of a front surface thereof, wherein the cap includes a hole formed to discharge air.

A washing apparatus is provided. The washing apparatus includes a tub, a drum configured to be rotatable in the tub, a pulsator configured to be rotatable in the drum, a driver configured to drive the drum and the pulsator, and a controller configured to control the driver to rotate the pulsator to a second direction while rotating the drum to a first direction. The controller controls the driver to drive the pulsator based on a position of laundry accommodated in the drum during a rotation of the drum.

A washing apparatus is provided. The washing apparatus includes a tub, a drum configured to be rotatable in the tub, a pulsator configured to be rotatable in the drum, a driver configured to drive the drum and the pulsator, and a controller configured to control the driver to rotate the pulsator to a second direction while rotating the drum to a first direction. The controller controls the driver to drive the pulsator based on a position of laundry accommodated in the drum during a rotation of the drum.

Disclosed is a method of controlling a laundry treating apparatus comprising a tub configured to hold wash water, a drum mounted in the tub, a pulsator mounted in the drum, a sub-drum coupled to the drum, the sub-drum being configured to hold wash water, and a drive unit configured to rotate the drum and the pulsator. The method comprises a water current forming step comprising performing a basket motion and a pulsate motion and a cooling step comprising lowering the temperature of the drive unit. The basket motion is configured to form water current in the wash water held in the tub and in the sub-drum simultaneously. The pulsate motion is configured to form water current in wash water held in the drum while the pulsator is driven. A performance timing of the cooling step is preset in at least one of the wash cycle or the rinse cycle.

Disclosed is a method of controlling a laundry treating apparatus comprising a tub configured to hold wash water, a drum mounted in the tub, a pulsator mounted in the drum, a sub-drum coupled to the drum, the sub-drum being configured to hold wash water, and a drive unit configured to rotate the drum and the pulsator. The method comprises a water current forming step comprising performing a basket motion and a pulsate motion and a cooling step comprising lowering the temperature of the drive unit. The basket motion is configured to form water current in the wash water held in the tub and in the sub-drum simultaneously. The pulsate motion is configured to form water current in wash water held in the drum while the pulsator is driven. A performance timing of the cooling step is preset in at least one of the wash cycle or the rinse cycle.

A washing machine includes a washing tub rotatably disposed to accommodate laundry, a pulsator rotatably disposed in the washing tub, a drive shaft to rotate the pulsator, a dehydration shaft to be connected to the washing tub and through which the drive shaft passes, a solenoid to form a magnetic field when a current is applied, a fixing core to surround the solenoid, and a clutch to couple and uncouple the drive shaft and the dehydration shaft. The clutch includes an armature to be lifted by a magnetic force of the solenoid, and a clutch coupler to be elevated along the dehydration shaft, perform coupling between the drive shaft and the dehydration shaft in a first position, and perform uncoupling between the drive shaft and the dehydration shaft in a second position lifted from the first position.

A washing machine includes a washing tub rotatably disposed to accommodate laundry, a pulsator rotatably disposed in the washing tub, a drive shaft to rotate the pulsator, a dehydration shaft to be connected to the washing tub and through which the drive shaft passes, a solenoid to form a magnetic field when a current is applied, a fixing core to surround the solenoid, and a clutch to couple and uncouple the drive shaft and the dehydration shaft. The clutch includes an armature to be lifted by a magnetic force of the solenoid, and a clutch coupler to be elevated along the dehydration shaft, perform coupling between the drive shaft and the dehydration shaft in a first position, and perform uncoupling between the drive shaft and the dehydration shaft in a second position lifted from the first position.

The present disclosure provides a transmission device for a household electrical appliance, including a drive shaft and an output shaft assembly. The output shaft assembly includes a planetary carrier, a planetary gear train mounted on the planetary carrier, an output shaft and a follower shaft. The planetary gear train includes a sun gear and at least one planetary gear engaged with the sun gear. The planetary carrier is connected to the output shaft. The sun gear is connected to the follower shaft. The planetary carrier is provided with a first bearing and a second bearing that are disposed coaxially with the output shaft. One end of the follower shaft protrudes from the sun gear and is connected to the first bearing. One other end of the follower shaft passes through the second bearing, protrudes from the planetary carrier and is connected to the drive shaft in a clearance fit.

A washing machine includes a drum, a pulsator, a motor including a stator, a first rotor connected to the drum and second rotor connected to the pulsator, an inverter circuit connected to the motor, and at least one processor configured to control the inverter circuit to selectively drive the motor based on a plurality of driving modes, the plurality of driving modes including a first driving mode to rotate only the first rotor, a second driving mode to rotate only the second rotor, or a third driving mode to rotate both the first rotor and the second rotor, control the inverter circuit to stop both the first rotor and the second rotor in response to changing from one of the plurality of driving modes to an other one of the plurality of driving modes, and control the inverter circuit to drive the motor based on the changed driving mode.

A washing machine includes a drum, a pulsator, a motor including a stator, a first rotor connected to the drum and second rotor connected to the pulsator, an inverter circuit connected to the motor, and at least one processor configured to control the inverter circuit to selectively drive the motor based on a plurality of driving modes, the plurality of driving modes including a first driving mode to rotate only the first rotor, a second driving mode to rotate only the second rotor, or a third driving mode to rotate both the first rotor and the second rotor, control the inverter circuit to stop both the first rotor and the second rotor in response to changing from one of the plurality of driving modes to an other one of the plurality of driving modes, and control the inverter circuit to drive the motor based on the changed driving mode.